199929318 has 32 divisors (see below), whose sum is σ = 406657152. Its totient is φ = 65520000.

The previous prime is 199929311. The next prime is 199929349. The reversal of 199929318 is 813929991.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199929311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87693 + ... + 89943.

It is an arithmetic number, because the mean of its divisors is an integer number (12708036).

Almost surely, 2^199929318 is an apocalyptic number.

199929318 is an abundant number, since it is smaller than the sum of its proper divisors (206727834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199929318 is a wasteful number, since it uses less digits than its factorization.

199929318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500.

The product of its digits is 314928, while the sum is 51.

The square root of 199929318 is about 14139.6364168249. The cubic root of 199929318 is about 584.7346477180.

The spelling of 199929318 in words is "one hundred ninety-nine million, nine hundred twenty-nine thousand, three hundred eighteen".